f/overrides/event-backup/hncvx-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

835 B

1DateDividends
22018-03-280.022000
32018-06-280.023000
42018-12-170.595000
52022-12-190.063000
62023-09-290.104000
72017-03-300.040000
82017-06-290.033000
92019-09-260.023000
102019-12-160.369000
112023-06-300.105000
122024-03-280.089000
132024-09-300.088000
142016-12-190.067000
152020-03-300.019000
162022-03-300.006000
172022-06-290.006000
182025-03-310.061000
192025-06-300.080000
202016-06-290.029000
212018-09-270.023000
222021-12-201.666000
232024-06-280.093000
242024-12-200.143000
252025-12-190.112000
262026-03-310.057000
272017-12-181.025000
282021-03-300.006000
292022-09-290.015000
302023-03-310.071000
312026-06-300.071000
322017-09-280.040000
332019-06-270.025000
342020-06-290.016000
352016-03-300.026000
362016-09-290.025000
372019-03-280.024000
382020-09-290.015000
392020-12-171.243000
402023-12-190.073000
412021-06-290.003000
422025-09-300.058000